Iraqi officials are investigating the food poisoning of hundreds of Iraqi police at a base southeast of Baghdad.

An Iraqi military official (Qassim al-Moussawi) says between 350 to 400 police fell ill after eating a meal Sunday in Numaniya.  They were breaking their daylight Ramadan fast.

Officials have been quoted as saying several men died, although the defense ministry has denied the reports of fatalities. 

It is unclear if the poisoning was deliberate.  Iraqi officials say several people have been arrested.

In other news, attackers shot and killed a brother of Iraq's Sunni Arab vice president in his Baghdad home Monday.

The victim, Amir al-Hashimi, was a brother to Vice President Tariq al-Hashimi and had been an adviser to Iraq's defense ministry.  Assailants killed al-Hashimi's sister and another brother in attacks in the past year.

Also Monday, a suicide car bombing at a police checkpoint in the northern town of Tal Afar killed one policeman and wounded 11 other people. 

The U.S. military also announced that three Marines died Sunday from wounds sustained from enemy action in Al Anbar province.